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The multi-stage flywheel is based on the single-stage flywheel, adding several flywheel plates and combining them with the sprocket on the central shaft to form various transmission ratios, thus changing the speed of the bicycle.
Single-stage flywheel, also known as single-chain wheel flywheel, is mainly composed of outer sleeve, flat block and core, jack, jack spring, washer, wire block, steel ball and other parts.
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Hebei Hongchi Bicycle Co., Ltd.